Portable power station



FIG. 1 is a top front perspective view of a portable power station showing my new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom view thereof.

The portions shown in broken line form no part of the claimed invention. 

CLAIM The ornamental design for a portable power station, as shown and described. 